/*
 * Copyright 2019 the original author or authors.
 *
 * Licensed under the Apache, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at  http://www.gnu.org/licenses/lgpl-3.0.html
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.alibaba.fastjson.serializer;

import java.io.IOException;
import java.lang.reflect.Type;
import java.text.SimpleDateFormat;
import java.util.Date;

public class SimpleDateFormatSerializer implements ObjectSerializer {

    private final String pattern;

    public SimpleDateFormatSerializer(String pattern) {
        this.pattern = pattern;
    }

    public void write(JSONSerializer serializer, Object object, Object fieldName, Type fieldType, int features) throws IOException {
        if (object == null) {
            serializer.out.writeNull();
            return;
        }

        Date date = (Date) object;
        SimpleDateFormat format = new SimpleDateFormat(pattern, serializer.locale);
        format.setTimeZone(serializer.timeZone);

        String text = format.format(date);
        serializer.write(text);
    }
}
